If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.

I tried this combo with 48.0 gr. of powder and didn't quite get the velocity I was looking for, but accuracy was good. I've tried to piece together some information from the web like handloads.com, Steve's pages and such.

I'd like to try something like 49.5 gr. of IMR 4320 and see what I get but I cannot find any published data. I did find a person who's favorite load using a 150gr. bullet was 49.0 gr. of 4320. Steve's pages says I can max out at 51.0 gr., but that's for a .310 dia. bullet.

Re: 7.62x54R Load using IMR 4320

No load data in my Lymans 48th but that does seem like it'd be really close to the max powder charge. 4320's load capacities in similar cartridges are very close to Varget's suggested start and max loads. The max load for Varget in 7.62x54R is 48gn for that bullet. What velocity are you getting?

Re: 7.62x54R Load using IMR 4320

You might want to check your grove diameter. Depending on wear, if your grove diameter is .310 or less you should use .308 bullets. If the diameter is greater than .310 I suggest that you go with .311. Just my $0.02!!!

You might want to check your grove diameter. Depending on wear, if your grove diameter is .310 or less you should use .308 bullets. If the diameter is greater than .310 I suggest that you go with .311. Just my $0.02!!!

Using 48.0 gr. of IMR 4320 gives:

AVG: 2729 fps
ES: 61 fps
SD: 27.06 fps

I have slugged the bore and it runs from .311 to .312, that's why I'm using the .311 bullets.

It shoots great with 48 gr. but I was trying to pump the velocity up a bit but I didn't know where the max was.

Steve's Pages lists the top end for 4320 at 51.0 gr. but that's with a .310 bullet. I'm using .311.

Re: 7.62x54R Load using IMR 4320

Glad you got the load you liked. If you have one that works, you don't really need reloading data. Just slowly work up from there and look for the signs. Reloading data is usually really conservative anyway. Just work up and be careful. Don't go up by whole grains and jam the bullet .010 into the lands and you'll be ok.

I tried this combo with 48.0 gr. of powder and didn't quite get the velocity I was looking for, but accuracy was good. I've tried to piece together some information from the web like handloads.com, Steve's pages and such.

I'd like to try something like 49.5 gr. of IMR 4320 and see what I get but I cannot find any published data. I did find a person who's favorite load using a 150gr. bullet was 49.0 gr. of 4320. Steve's pages says I can max out at 51.0 gr., but that's for a .310 dia. bullet.